000 FZNT02 KNHC 231007 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1030 UTC THU SEP 23 2021 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT. SECURITE ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND GULF OF MEXICO SYNOPSIS VALID 0600 UTC THU SEP 23. 24 HOUR FORECAST VALID 0600 UTC FRI SEP 24. 48 HOUR FORECAST VALID 0600 UTC SAT SEP 25. .WARNINGS. ...ATLANTIC TROPICAL STORM WARNING... .TROPICAL DEPRESSION EIGHTEEN NEAR 10.5N 36.4W 1008 MB AT 0900 UTC SEP 23 MOVING W OR 280 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 10N35W TO 11N40W TO 12N41W TO 14N40W TO 16N35W TO 10N35W WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. .12 HOUR FORECAST TROPICAL STORM EIGHTEEN NEAR 10.8N 38.4W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. .24 HOUR FORECAST TROPICAL STORM EIGHTEEN NEAR 11.3N 40.9W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S SEMICIRCLE...70 NM NE QUADRANT AND 50 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 150 NM NE AND 120 NM NW QUADRANTS WITH SEAS TO 15 FT. ELSEWHERE WITHIN 11N38W TO 10N41W TO 12N44W TO 14N44W TO 15N40W TO 11N38W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .48 HOUR FORECAST TROPICAL STORM EIGHTEEN NEAR 12.5N 45.2W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NE QUADRANT...50 NM SE QUADRANT...20 NM SW QUADRANT...AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE AND 150 NM NW QUADRANTS WITH SEAS TO 18 FT. ELSEWHERE WITHIN 10N43W TO 10N47W TO 14N48W TO 16N46W TO 14N42W TO 10N43W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. .60 HOUR FORECAST HURRICANE EIGHTEEN NEAR 13.0N 46.9W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. .72 HOUR FORECAST HURRICANE EIGHTEEN NEAR 13.7N 48.3W. MAXIMUM SUSTAINED WINDS 80 KT GUSTS 100 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST HURRICANE EIGHTEEN NEAR 15.0N 50.8W. MAXIMUM SUSTAINED WINDS 90 KT GUSTS 110 KT. .120 HOUR FORECAST HURRICANE EIGHTEEN NEAR 16.9N 53.9W. MAXIMUM SUSTAINED WINDS 100 KT GUSTS 120 KT. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .SYNOPSIS AND FORECAST. .POST-TROPICAL CYCLONE ROSE NEAR 25.2N 41.6W 1010 MB AT 0900 UTC SEP 23 MOVING NW OR 310 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. SEAS TO 12 FT WITHIN 120 NM NE QUADRANT. WITHIN 24N40W TO 27N43W TO 29N42W TO 29N39W TO 27N38W TO 24N40W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. ELSEWHERE WITHIN 26N35W TO 23N40W TO 23N47W TO 30N61W TO 31N35W TO 26N35W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT PRIMARILY IN N SWELL. .24 HOUR FORECAST POST-TROPICAL REMNANT LOW ROSE NEAR 27.8N 42.1W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 27N39W TO 27N42W TO 30N43W TO 29N40W TO 27N39W WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE WITHIN 29N50W TO 28N52W TO 31N58W TO 31N49W TO 29N50W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N TO NE SWELL. .48 HOUR FORECAST POST-TROPICAL REMNANT LOW ROSE NEAR 29.2N 38.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 28N35W TO 28N36W TO 29N36W TO 30N36W TO 30N35W TO 28N35W SW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .60 HOUR FORECAST...DISSIPATED. .ATLC LOW PRESSURE...REMNANT LOW OF PETER...NEAR 22N67W 1008 MB. WITHIN 22N65W TO 22N68W TO 26N69W TO 26N68W TO 24N66W TO 22N65W E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT. .24 HOUR FORECAST LOW PRESSURE DISSIPATED. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .GULF OF MEXICO COLD FRONT FROM 29N83W TO 20.5N97W. WITHIN 28N94W TO 30N85W TO 25N95W TO 28N94W N TO NE WINDS 20 TO 25 KT. SEAS TO 8 FT. .12 HOUR FORECAST COLD FRONT FROM 28N83W TO 21N95W TO 18.5N95W WITHIN 18N94W TO 19N96W TO 21N97W TO 21N96W TO 20N94W TO 18N94W...INCLUDING WITHIN 60 NM OF VERACRUZ... NW TO N WINDS 20 TO 25 KT. SEAS TO 8 FT. .24 HOUR FORECAST STATIONARY FRONT FROM 27N82W TO 21N95W TO 18N95W. CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.